Excavating-bucket and operating means therefor



F. W. BOND. EXCAVATING BUCKET AND OPERATING MEANS THEREFOR.

APPLICATION FILED JAN. 19, 1920- 1,398,222, Patented Nov. 29, 1921.

, 4 SHEETS-SHEET 1.

@1 awe cum;

F. W. BOND.

EXCAVATING BUCKET AND OPERATING MEANS THEREFOR. APPLICATION FILED JAN. 19, 1920.

1 ,398,222. Patented Nova 29, 1921.,

4 SHEETS-SHEET Z. 1&4.

I Eedem'dz WB $5 Z alto 014a F. W. BOND.

EXCAVATIN G BUCKET AND OPERATING MEANS THEREFOR. APPLICATION FILED JAN. 19 1920.

1,398,222, Patented Nov. 29, 1921.

- 4- SHEETS-SHEET 3. .5.

a hue/whom Eeaemb/d' Wzolztf $1 61mm,

F. W. BOND.

"EXCAVATING BUCKET AND OPERATING MEANS THEREFOR. APPLICATION FILED JAN. I9. 1920.

4 SHEETS-SHEET 4- "Tug-mm Patented Nov. 29, 1921.

FREDERICK.

WILLIAM: BOND, 0F RANSOIEVILLE,

NEW YORK nxcAvATine-nnonn'r an]: ornna'riivo ianans mnnnnron.

Specification of Letters Patent. Patented Nov. 221i, 3.92 0

Application filed January 19, 1920. Serial No. 852,369.

To all whomtt may concern:

Be it known that l, FREDERICK WILLIAM Bonn, a citizen of the United States, residing at Ransomville, in the county of Niagara and State of New York, have invented new and useful Improvements in Excavating Buckets and Operating Means Therefor, of which the following is a specification.

This invention relates to improvements in excavating buckets and operating means therefor and consists in an improved arrangement and construction thereof which materially contributes to the efficiency of the bucket in its operation and moreover possesses important advantages over the con structions as heretofore used.

Important features of the present invention consist in a novel construction and er rangemcnt particularly adapted for success fully operating under special conditions, for instance, where there is restricted working space as in the removal of the material from within" open caissons, cofferdams or similar locations. In the l tter connection my improved construction has demonstrated valuable utility and efficiency in the removal of material. from within open caissons of cylindrical form composed of interlocking sheet piling as customarily used in the construction of foundations and similar installations.

Additional important features of my invention comprise means for accurately controlling and positively defining the move ment of the bucket in a manner which greatly facilitates and expedites the excavating operation particularly in operating within a close area and further in the provision of novel guiding means for the bucket operative to guide the latter throughout its fullrange of movement and moreover adapted to be movable upwardly with the bucket from normal position thereby to permit substantial elevation of the bucket with unobstructed clearance thereunder. Gther important features thereof include an improved operating means for the bucket blades adapted to insure their proper operation and which is structurally strong and compact, readily permits of obtaining the proper leverage for the excavating of material of different character, is advantageously' arranged whereby the operating connections are protected against interference therewith by the material being excavated and moreover is of an improved arrangement having a low center of gravity to avoid top heaviness when weighted to dig into hard materials.

My present I invention further embodies important features of improvement in the construction of the so called orange peel type of bucket whereby the improved device constructed in accordance therewith will be inexpensive in manufacture, eiiicicnt in its operation and of particularly strong construction.

The described and other valuable features and advantages of my improved construction and arrangement will be understoodby reference to the accompanying drawings wherein like referencecharacters are applied to the corresponding parts in the several views.

' In the drawings Figure 1 is a view in side elevation illustrating the improved bucket and operating means embodying the features of my invention.

Fig. 2 is an enlarged view illustrating my improved bucket construction in elevation.

Fig. 3 is a central, vertical, cross sectional view thereof.

Fig- 4: is a plan view of my improved bucket construction as shown in Figs. 2 and 3, and I Fig. 5 is a detail view in horizontal cross section illustrating the guiding way construction.

In the drawings there is illustrated an approved embodiment of the features of my invention incorporated in an excavating bucket construction of the orange peel type. As hereinbefore referred to my improved bucket and operating means is particularly adapted for excavating and removing the material from close or confined areas as for instance within circular coffer dams or open caissons of comparatively small diameter.

In accordance therewith my. invention 18 illustrated in the accompanying drawings in combination with operating means especially adapted for the performance of work of this character. To this end in Fig. 1 of the drawing, my improved bucket and operating means therefor is illustrated as used in a typical installation for the removal of the material from within the confined area inclosed by a coffer dam or open caisson 1 which may be desirably formed of interlocked metal sheet piling as commonly employed in the construction of foundations for buildings or other structures.

The bucket B of my improved construction is arranged to be operated by a suitable revolving platform derrick D adapted in operation first to lower the opened bucket into the caisson, then to close the bucket in the usual manner to pick up the material and to then raise or elevate the buck'et after which the derrick is rotated to a suitable position for discharging the material into carts or other means for conveying the same.

In accordance with an important feature of the present invention provision is made for controlling the operation of the bucket in a manner whereby it is positively guided in its movement into and out of the interior of the caisson. A desirable means here provided for this purpose consists of oppositely positioned guide members 3-3 connected to and upwardly extending from the bucket. The guide members 3 as shown may desirably consist of channels connected by transversely arranged clamping bolts 4 passed through tubular spacing members or spreaders 5 interposed between the channels and engaging the opposed inner surfaces thereof.

The guide members 3 are positioned vertically and in parallel relation and are fitted within a suitable guide way supported by the derrick so that the bucket will be controlled in its movement to move in a definite vertical plane. The guide way as here shown is formed by oppositely positioned parallel and vertically arranged guides or leaders 6 which may desirably be formed of I-beams as shown connected by spacing and connecting channel bars 7 riveted thereto. As best shown in Fig. 5 the I-beams or guide members 6 are arranged with their web portions parallel and in proper spaced relation so that the inwardly directed grooves between the flanges of the I-beams receive therein the channel guides 3 and provide guide ways therefor. The outwardly directed channels or grooves between the flanges of the I*-beam 6 are arranged as shown to receive therein vertical guide beams or leaders 8 supported upon movable offset brackets or frames 10 and 11. The brackets 10 and 11 are designed to position and support the guide way beams 6 to be movable in a vertical plane in spaced relation to the vertical leader timbers 12, 12

of the derrick proper. As best shown in Fig. 5 the offset brackets 10 and 11 are suitably fabricated and are arranged to have sliding connection with the leader timbers 12 by means of channel members 13, 13 attached to the rearward portions thereof; the channel members 13 being suitably spaced with their grooves vertically and outwardly spaced to be received within the grooves whereby the channel members 13 are confined thereby in guiding relation.

The construction as described thus provides guiding means for the bucket to control its movement 'in -a vertical plane and so as to prevent lateral or swinging motion thereof. The improved means therefor, consisting of the guide members 3, guide way beams 6 and offset brackets 10 and 11 are further in accordance with my invention so arranged and correlated that they will be movable upwardly upon the raising of the bucket so to permit of the latter being elevated to a substantial height for proper clearance to discharge the material. This desired operation is provided for by the described construction whereby the guide members 3 are slidably fitted within the guideway formed by the beams or leaders 6 and the latter in turn, similarly, slidably engage the guide beams 8 of the offset brackets 10 and 11 which are arranged to have vertical sliding movement by means of guide-way engagement with the leader timbers 12 of the derrick proper. Thus it is arranged that the respective guiding members 3, 6, 8, and 13 shall be capable of being elevated or lifted throughout a desired range of movement for the purpose of allowing the bucket to be raised to the desired degree. The lifting of the respective members is effected upon the elevation of the bucket proper by means of the usual holding or lifting cable 15 suitably attached to the bucket B and passed upwardly over the idler 16, top pulley 17 and from thence to the winding drum 18 operated by a suitable motor or engine as indicated.

To carry out this manner of operation I desirably provide an engaging lug 2O cent to the lower end portion of the guide member 15 and similar projectinglugs 21 adjacent the lower end portion of the guide way beams 6, from which it results that upon the elevation of the bucket B, from its lowermost position, the guide members 15 will first move upwardly or telescope within the guide way'beams 6 until the lug 20 engages the'lower end of the guide way beams 6 after which further elevating movement carries with it the guide way beams 6 sliding with relation to the leaders ;8 The lower bracket 10 is arranged whereby in its lowermost position it will be above the limit of upward movement of the bucket in its normal operation and as hereinafter described it is arranged that the lowermost position of the bracket 10 is readily adjustable to suit the conditions of the operation. In addition thereto by reason of the sliding engagement of the bracket 10 with the leader timbers 12 upon the engagement of the lugs 21 with the underside of the bracket 10 further progressive upward movement of the bracket is permitted which will also carry upwardly the bracket slidable upon its ways 1213. As illustrated in Fig. 1 in dotted lines the bucket may be elevated to a substantial height carrying with it as described the guide beams and supporting bracket 10 which is adapted to engage the under side of the bracket 11 when sufiiciently elevated and to elevate the latter bracket with it upon further upward movement. The arrangement thus provided not only permits of elevating the bucket to the desired height for conveniently discharging in a suitable vehicle for conveying away the material but further by elevation with it of the guiding members provides for full and unobstructed clearance thereunder.

For determining the lowermost position of the respective guide members and providing support therefor suitable stop lugs 24, 25 are attached to tie derrick leaders 12 to provide bearing rests for the ofiset brackets 10 and 11 respectively. As will be readily understood the uppermost stop lug or dog 25 is suitably arranged to be engaged by the upper bracket 11 to provide a lower rest therefor and also may be so arranged that the lower bracket shall not engage therewith. Similarly the stop lugs 26 are attached to the guiding beams 6 adjacent to upper ends and positioned to engage with the topsurface of the bracket 11 to provide rest bearings for the giude beams 6 when in lowermost position in full lines in Fig. 1. its will be readily understood the stop lugs 24, 25 and 26 may be adapted for attachment to the respective members in different positions for adjusting or changing the normal lowermost position of the brackets and the guide member 6 for this purpose being secured. in position by bolts passing through suitable apertures of the members to which they are secured. As will be understood from the foregoing, my improved arrangement provides for conveniently and successfully excavating within confined areas in an efficient and eX- peditious manner. In operation it will be understood that the excavating bucket B will be lowered in its opened position within the caisson and thereafter closed by suit able operating means to pick up the material after which it is elevated by the usual cable in the improved manner described until it has been raised to the desired degree after which the derrick platform will be rotated so as to convey the bucket to a position of discharge at which point the bucket is opened to drop the material. The platform derrick is then revolved to again bring the bucket into vertical registration with the interior of the caisson which posi tion may be determined by a suitable stop. Thereafter upon lowering of the bucket the guiding members will simultaneously lower by gravity until they engage their respective stops and in this operation will positively guide the bucket within the caisson cylinder. In the operation of my improved excavating device for removing the material from within two or more caisson cylinders, the operation is further facilitiated where possible by positioning the turn table derrick whereby the are described by the bucket on revolving the derrick platform will pass centrally over two or more of the caisson cylinders.

My present invention further embodies important improvements in the construction of the excavating bucket which is of. an improved design particularly adapted for further contributing to the efiiciency of oper ation. My improved features of construction and arrangement are illustrated incorporated in a bucket of the orange peel type having the usual segments or blades 30 supported whereby when in one position they will form a closed receptacle or bucket. As best shown in Figs. 2 and 3 the support ing and operating means of my improved bucket comprise centrally positioned outer and inner cylinder members 31 and 32 vertically arranged. The outer or supporting cylinder 31 at its upper portion carries a supporting shaft 3% horizontally positioned therein and bolted externally thereon is an annular supporting collar 35 formed with outwardly projecting bearing lugs or ears 36 to which are fitted pivotal bolts 38 pivots by being directly attached to the operating.

levers 4C2 at their upper marginal edges and by the supporting links 39 upon which the operating levers 42 are fulcrumedby means of the supporting bolt 4L0 described. The operating levers d2 as shown are attached centrally to the bucket blades 30 and are equidistantly spaced and extend inwardly toward the central axis of the bucket. At their innermost ends the operating levers are pivotally connected as shown by means of bolts a l to the under side of the inner operating cylinder 32 by means of lugs d5 integrally formed upona collar d6 secured to the cylinder 32 at its lower margin. From the described arrangement and construction, as

best shown in Fig. 2, the lowering or separation of the inner cylinder 32 with reference to the outer cylinder 31 will depress the operating levers or arms 42 to swing the blades and thence to the operating drum.

on their tulcrums d0 into the opened position as shown 111 dotted lines. in similar manner return movement or elevating of the inner cylinder 32 will operate the bucket blades 30 into the closed position as shown in full lines in Fig. 2. Suspending the bucket blades upon the swinging links 39 as shown permits of the movement being transmitted by direct connection 01": the operating cylinder 32 to the lever arms 12 with the cylinder iaving av rectilinear vertical motion from whichit results that there is no dissipation ot' power in its transmission.

The power for operating the bucket blades is transmitted thereto by means of the usual power cable 48 operating through the usual sheave blocks for obtaining the proper leverage. In accordance with my improved construction the sheave blocks are protectively inclosed within the supporting and operating cylinders 31 and 32 and consist of a fixed supporting sheave block 49 supported upon the supporting shaft 3 1 and thereby rigidly connected to the outer or supporting cylinder 31 and a lower movable sheave block 50 supported upon a transverse supporting shaft 52 carried by the inner or operating cylinder 32. The power cable 21. as indicated is attached at one end to a securing bolt 53 carried by the sheave 19 from whence it passes over the pulley wheels ofthe respective sheave blocks and thence upwardly dyer suitable idler at 16, top pulley 17 and to the usual operatingdrum 18. Thus winding up of the cable upon the power drum will operate to raise the operating cylinder 32 to eiiect the closing or the bucket and upon releasing of the cable the weight of the cylinder 32, sheave '50 carried thereby and associated parts will operate by gravity to open the bucket. The usual holding 'ne 15 for litting the bucket in the manner heretofore described is here shown attached by means of bolt 56 to the uppermost sheave 19 and thus is indirectly attached to the outer cylinder 31. The holding or lifting line 15 as shown passes upwardly over idler at 16, pulley at 17 The. guideway members 3, 3 in the construction shown are secured to the outercylinder member 31 bybeing bolted to upper and lower annular members 35 and 37 attached to the cylinder.

I have thus produced an excavating bucket and an operating means therefor 01": an improved design which 1n practlce hasproven to be very efficient and operative in a manner greatly facilitating and expediting the'excavation of confined areas such within open caissons as described. F or the latter purpose particular advantage is derived from my improved arrangement whereby the bucket is positively guided in the raising and lowering operations and as will be obvious my improved construction of the bucket and its for successful operation under the described conditions. Further important advantages incident to my improved bucket construction include the protection of the working parts against interference by the material being excavated resulting from the arrangement whereby the sheaves are inclosed within the cylinder members 31 and 32 and the further provision of a bottom protecting plate 60 arranged to close the lower end or the inner cylinder 32; the arrangement as described whereby the bucket and blade operating means are arranged to have a comparatively low center of gravity, the arrangement for operating the respective blades by means of a central operating cylinder having a vertical movement connected to transmit the operating motion directly to the respective blades through connections radiating there from; and the further improved arrangement of the operating sheaves which permits of conveniently changing the sheaves to permit of increasingthe sheaves if desired with relation to the material to be excavated.

While I have described a desirable embodiment of the features of my invention itwill be understood that various modifications may be made therein without departing from the scope of the invention and itcis therefore int-ended that all matter herein shall be interpreted as illustrative and not in a limiting sense.

Having described my invention 1 claim 1. An excavating bucket comprising a plurality of movable segments or blades sultably tulcrumed, a supporting cylinder memher centrally arranged with relation thereto,

operating sheaves supportcdrespectively by 1 i the supporting cylinder and operating cylinder and centrally arranged there within, substantially as described.

2. An excavating bucket comprising a plurality of movable segments or blades suit-v ably fulcrumecha supporting cylinder member centrally arranged withrelation thereto,

inwardly directed operating levers rigidly secured to the respective bucket blades ad jacent their upper marginal edges, a centrally arranged operating cylinder fitted to move vertically within thev supporting cylinder, connections between the operating cylinder and the bucket levers and support- 7 ing links pivotally connected to the supporting cylinder and to the operating levers and operating sheaves supported respectively by the supporting cylinder and operating cylinder and centrally arranged there within and a protective member arranged to close the bottom end of the operating cylinder, substantially as described.

3. An excavating bucket of the orange peel type comprising a plurality of movable segments or blades symmetrically positioned with relation to a central vertical axis, a vertically arranged supporting cylinder disposed concentrically therewith, inwardly directed operating levers rigidly attached to the respective bucket blades adjacent their upper marginal edges and extending radially with reference to the central axis, a concentrically arranged operating cylinder fitted to have guiding engagement with the supporting cylinder, pivotal connections between said operating cylinder and the operating levers, supporting links pivotally connected to the supporting cylinder adjacent the upper edge thereof and pivotally connected at their lower ends to the operating levers, said supporting links being radially arranged with reference to the central vertical axis, an operating sheave centrally supported within the supporting cylinder and a co-acting sheave supported within the operating cylinder therebeneath, substantially as described.

4:. An excavating bucket of the orange peel type comprising a plurality of movable segments or blades symmetrically positioned with relation to a central vertical axis, a vertically arranged supporting cylinder disposed concentrically therewith, inwardly directed operating levers rigidly attached to the respective bucket blades adjacent their upper marginal edges and extending radially with reference to the central axis, a concentrically arranged operating cylinder fitted to have guiding engagement with the supporting cylinder, pivotal connections be tween said operating cylinder and the operating levers, supporting links pivotally connected to the supporting cylinder adja cent the upper edge thereof and pivotally connected at their lower ends to the operating levers, said supporting links being radially arranged with reference to the central vertical axis, an operating sheave centrally supported within the supporting cylinder, a co-acting sheave supported within the operating cylinder therebeneath and said operating cylinder being provided with a bottom end closing wall, substantially as described.

5. An excavating bucket of the orange peel type comprising a plurality of movable segments or blades symmetrically positioned with relation to a central vertical axis, a vertically arranged supporting cylinder disposed concentrically therewith, inwardly directed operating levers rigidly attached to the respective bucket blades adjacent their upper marginal edges and extending radially with reference to the central axis, a concentrically arranged operating cylinder fitted to have guiding engagement with the supporting cylinder, pivotal connections be tween said operating cylinder and the operating levers, supporting links pivotally connected to the supporting cylinder adjacent the upper edge thereof and pivotally connected at their lower ends to theoperating levers, said supporting links being radially arranged with reference to the central vertical axis, an operating sheave centrally supported within the supporting cylinder, a coacting sheave supported within the operating cylinder therebeneath, and oppositely positioned vertically extending guide members rigidly connected with the supporting cylinder, substantially as described.

In testimony whereof I have signed my name to this specification.

FREDERICK WILLIAM BOND.

Witnesses JAS. BELL, L. C. VERNEY. 

